N=int(input())
if N>=400 and 599>=N:
  print('8')
if N>=600 and 799>=N:
  print('7')
if N>=800 and 999>=N:
  print('6')
if N>=1000 and 1199>=N:
  print('5')
if N>=1200 and 1399>=N:
  print('4')
if N>=1400 and 1599>=N:
  print('3')
if N>=1600 and 1799>=N:
  print('2')
if N>=1800 and 1999>=N:
  print('1') N=int(input()) N int(input()) int input() input if N>=400 and 599>=N:
  print('8') N>=400 and 599>=N N>=400 N 400 599>=N 599 N print('8') print '8' if N>=600 and 799>=N:
  print('7') N>=600 and 799>=N N>=600 N 600 799>=N 799 N print('7') print '7' if N>=800 and 999>=N:
  print('6') N>=800 and 999>=N N>=800 N 800 999>=N 999 N print('6') print '6' if N>=1000 and 1199>=N:
  print('5') N>=1000 and 1199>=N N>=1000 N 1000 1199>=N 1199 N print('5') print '5' if N>=1200 and 1399>=N:
  print('4') N>=1200 and 1399>=N N>=1200 N 1200 1399>=N 1399 N print('4') print '4' if N>=1400 and 1599>=N:
  print('3') N>=1400 and 1599>=N N>=1400 N 1400 1599>=N 1599 N print('3') print '3' if N>=1600 and 1799>=N:
  print('2') N>=1600 and 1799>=N N>=1600 N 1600 1799>=N 1799 N print('2') print '2' if N>=1800 and 1999>=N:
  print('1') N>=1800 and 1999>=N N>=1800 N 1800 1999>=N 1999 N print('1') print '1' N=int(input()) int(input()) N
N=int(input())
if N>=400 and 599>=N:
  print('8')
if N>=600 and 799>=N:
  print('7')
if N>=800 and 999>=N:
  print('6')
if N>=1000 and 1199>=N:
  print('5')
if N>=1200 and 1399>=N:
  print('4')
if N>=1400 and 1599>=N:
  print('3')
if N>=1600 and 1799>=N:
  print('2')
if N>=1800 and 1999>=N:
  print('1')